COMMON STOCK (Details Textuals) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended					12 Months Ended							0 Months Ended			12 Months Ended			12 Months Ended	9 Months Ended
	Jul. 31, 2013 share_based_award	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2013 Vested Awards [Member]	Jul. 31, 2013 Unvested Awards [Member]	Jul. 31, 2013 Stock Options [Member]	Jul. 31, 2013 Stock Options [Member] Vests Rateably over Four Years [Member]	Jul. 31, 2013 Annual Award Units [Member] Nonemployee Directors [Member]	Jul. 31, 2012 Annual Award Units [Member] Nonemployee Directors [Member]	Jul. 31, 2013 Restricted stock units [Member]	Jul. 31, 2013 Management Stock Purchase Plan [Member]	Jul. 31, 2012 Management Stock Purchase Plan [Member]	May 02, 2012 ESPP Shares [Member]	Apr. 30, 2012 ESPP Shares [Member]	Oct. 31, 2011 ESPP Shares [Member]	Jul. 31, 2012 ESPP Shares [Member]	Jul. 31, 2011 ESPP Shares [Member]	Jul. 31, 2013 ESPP Shares [Member]	Jul. 31, 2013 2012 Stock Plan [Member] Stock Compensation Plan [Member]	Apr. 30, 2013 2012 Stock Plan [Member] One Lump Sum [Member] Stock Compensation Plan [Member] installment	Apr. 30, 2013 2012 Stock Plan [Member] Equal annual installments [Member] Stock Compensation Plan [Member] installment
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares repurchased (in shares)	3,971,000	2,281,000	2,867,000
Aggregate cost to repurchase shares	$ 250,000	$ 121,164	$ 149,907
Average price per share to repurchase shares (in dollars per share)	$ 62.95	$ 53.12	$ 52.29
Remaining balance to be expended under the board repurchase authorizations	331,873
Number of share based award types	4
Percentage of compensation to receive in equity form, if elected by director																			100.00%
Cash fees deferred payout options (number of installments)																				1	5
Number of shares issuable under 2012 Stock Plan (in shares)																			7,100
Stock option reduction ratio per share (in shares)																			1
Non-option reduction ratio per share (in shares)																			2.31
Vesting period of awards (in years)						4 years
Period after grant to disallow exercises (in years)						1 year
Time to expiration of awards granted (in years)						7 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage							25.00%
Stock option award units granted during the year (in shares)								16,000	21,000	464,000
Stock option award units granted during the year, weighted-average fair market values (in dollars per share)								$ 63.63	$ 58.02	$ 64.34						$ 13.06	$ 11.66
Total unrecognized compensation cost related to nonvested restricted stock units granted										40,950	9,416
Total unrecognized compensation cost related to nonvested stock options granted						16,527
Weighted-average period to recognize unrecognized compensation cost related to unvested restricted stock units granted (in years)						3 years				2 years 8 months 12 days	2 years 9 months 18 days
Total intrinsic value of options exercised during the years	$ 30,604	$ 17,326	$ 39,583
Restricated units granted under Mangement Stock Purchase Plan (in shares)											681,000	934,000
Percentage of the lower of the market price to purchase shares of common stock													85.00%	85.00%	85.00%
Shares issued under employee stock purchase plan (in shares)	116,000	470,000	512,000
Average price, Shares isued under employee stock purchase plan (in dollars per share)																$ 43.02	$ 35.09	$ 54.95
Number of shares of common stock reserved for stock-based compensation plans (in shares)	4,451,000			1,353,000	3,098,000